20945656

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{659}}^1$

素因数の和:831

約数の個数: 32

約数和(自身を含む): 40986000

約数和(自身を除く): 20040344

約数列:

[1, 2, 4, 8, 29, 58, 116, 137, 232, 274, 548, 659, 1096, 1318, 2636, 3973, 5272, 7946, 15892, 19111, 31784, 38222, 76444, 90283, 152888, 180566, 361132, 722264, 2618207, 5236414, 10472828, 20945656]

約数ペア:

[(1, 20945656), (2, 10472828), (4, 5236414), (8, 2618207), (29, 722264), (58, 361132), (116, 180566), (137, 152888), (232, 90283), (274, 76444), (548, 38222), (659, 31784), (1096, 19111), (1318, 15892), (2636, 7946), (3973, 5272)]